我正在尝试构建一个具有Boost和OpenCV依赖项的项目。具有类似依赖关系的其他项目似乎工作正常，但这会引发以下错误：
1>C:\boost_1_54_0\boost_1_54_0\boost/math/special_functions/detail/round_fwd.hpp(42): error C2143: syntax error : missing ';' before '&'
1>C:\boost_1_54_0\boost_1_54_0\boost/math/special_functions/detail/round_fwd.hpp(42): error C2734: 'boost::math::T' : const object must be initialized if not extern
1>C:\boost_1_54_0\boost_1_54_0\boost/math/special_functions/detail/round_fwd.hpp(42): error C2365: 'T' : redefinition; previous definition was 'template parameter'
1>C:\boost_1_54_0\boost_1_54_0\boost/math/special_functions/detail/round_fwd.hpp(42): error C2143: syntax error : missing ';' before '>='
1>C:\boost_1_54_0\boost_1_54_0\boost/math/special_functions/detail/round_fwd.hpp(44): error C2065: 'T' : undeclared identifier
1>C:\boost_1_54_0\boost_1_54_0\boost/math/special_functions/detail/round_fwd.hpp(44): error C2923: 'boost::math::tools::promote_args' : 'T' is not a valid template type argument for parameter 'T1'
1>C:\boost_1_54_0\boost_1_54_0\boost/math/special_functions/detail/round_fwd.hpp(44): error C2988: unrecognizable template declaration/definition
1>C:\boost_1_54_0\boost_1_54_0\boost/math/special_functions/detail/round_fwd.hpp(44): error C2059: syntax error : '<cv-qualifer>'
1>C:\boost_1_54_0\boost_1_54_0\boost/math/special_functions/detail/round_fwd.hpp(44): error C2062: type 'int' unexpected
1>C:\boost_1_54_0\boost_1_54_0\boost/math/special_functions/detail/round_fwd.hpp(44): error C2059: syntax error : ')'
1>C:\boost_1_54_0\boost_1_54_0\boost/math/special_functions/round.hpp(20): warning C4002: too many actual parameters for macro 'round'
1>C:\boost_1_54_0\boost_1_54_0\boost/math/special_functions/round.hpp(20): error C2143: syntax error : missing ';' before '&'
1>C:\boost_1_54_0\boost_1_54_0\boost/math/special_functions/round.hpp(20): error C2433: 'T' : 'inline' not permitted on data declarations
1>C:\boost_1_54_0\boost_1_54_0\boost/math/special_functions/round.hpp(20): error C2734: 'boost::math::T' : const object must be initialized if not extern
1>C:\boost_1_54_0\boost_1_54_0\boost/math/special_functions/round.hpp(20): error C2365: 'T' : redefinition; previous definition was 'template parameter'
1>C:\boost_1_54_0\boost_1_54_0\boost/math/special_functions/round.hpp(20): error C2143: syntax error : missing ';' before '>='
1>C:\boost_1_54_0\boost_1_54_0\boost/math/special_functions/round.hpp(29): error C2065: 'T' : undeclared identifier
1>C:\boost_1_54_0\boost_1_54_0\boost/math/special_functions/round.hpp(29): error C2923: 'boost::math::tools::promote_args' : 'T' is not a valid template type argument for parameter 'T1'
1>C:\boost_1_54_0\boost_1_54_0\boost/math/special_functions/round.hpp(29): error C2988: unrecognizable template declaration/definition
1>C:\boost_1_54_0\boost_1_54_0\boost/math/special_functions/round.hpp(29): error C2059: syntax error : '<cv-qualifer>'
1>C:\boost_1_54_0\boost_1_54_0\boost/math/special_functions/round.hpp(29): error C2062: type 'int' unexpected
1>C:\boost_1_54_0\boost_1_54_0\boost/math/special_functions/round.hpp(29): error C2059: syntax error : ')'
1>C:\boost_1_54_0\boost_1_54_0\boost/math/special_functions/round.hpp(30): error C2143: syntax error : missing ';' before '{'
1>C:\boost_1_54_0\boost_1_54_0\boost/math/special_functions/round.hpp(30): error C2447: '{' : missing function header (old-style formal list?)
这里可能存在什么问题？
我已将宏圆的名称更改为其他内容，现在已将其更改为过去的错误。但现在，又出现了另一个错误：实际上这是一个Linux实现。我试图在Windows中运行它，因此我在windows中添加了timeoftheday实现代码。
1>eval_ffd.obj : error LNK2005: main already defined in demo.obj
1>eval_ffd.obj : error LNK2005: "void __cdecl eval_forest(struct FaceForestOptions,class std::vector<struct FaceAnnotation,class std::allocator<struct FaceAnnotation> > &)" (?eval_forest@@YAXUFaceForestOptions@@AEAV?$vector@UFaceAnnotation@@V?$allocator@UFaceAnnotation@@@std@@@std@@@Z) already defined in demo.obj
1>eval_ffd.obj : error LNK2005: "int __cdecl gettimeofday(struct timeval *,struct timezone *)" (?gettimeofday@@YAHPEAUtimeval@@PEAUtimezone@@@Z) already defined in demo.obj
1>face_forest.obj : error LNK2005: "int __cdecl gettimeofday(struct timeval *,struct timezone *)" (?gettimeofday@@YAHPEAUtimeval@@PEAUtimezone@@@Z) already defined in demo.obj
1>face_utils.obj : error LNK2005: "int __cdecl gettimeofday(struct timeval *,struct timezone *)" (?gettimeofday@@YAHPEAUtimeval@@PEAUtimezone@@@Z) already defined in demo.obj
1>head_pose_sample.obj : error LNK2005: "int __cdecl gettimeofday(struct timeval *,struct timezone *)" (?gettimeofday@@YAHPEAUtimeval@@PEAUtimezone@@@Z) already defined in demo.obj
1>image_sample.obj : error LNK2005: "int __cdecl gettimeofday(struct timeval *,struct timezone *)" (?gettimeofday@@YAHPEAUtimeval@@PEAUtimezone@@@Z) already defined in demo.obj
1>multi_part_sample.obj : error LNK2005: "int __cdecl gettimeofday(struct timeval *,struct timezone *)" (?gettimeofday@@YAHPEAUtimeval@@PEAUtimezone@@@Z) already defined in demo.obj
1>train_ffd.obj : error LNK2005: main already defined in demo.obj
1>train_ffd.obj : error LNK2005: "int __cdecl gettimeofday(struct timeval *,struct timezone *)" (?gettimeofday@@YAHPEAUtimeval@@PEAUtimezone@@@Z) already defined in demo.obj
1>train_headpose.obj : error LNK2005: main already defined in demo.obj
1>train_headpose.obj : error LNK2005: "int __cdecl gettimeofday(struct timeval *,struct timezone *)" (?gettimeofday@@YAHPEAUtimeval@@PEAUtimezone@@@Z) already defined in demo.obj
1>LINK : fatal error LNK1104: cannot open file 'libboost_system-vc110-mt-1_54.lib'
答案 0 :(得分：2)
看起来有些东西正在声明一个名为'round'的宏。
在您的错误中，请参阅以下行：
1>C:\boost_1_54_0\boost_1_54_0\boost/math/special_functions/round.hpp(20): warning C4002: too many actual parameters for macro 'round'
在任何库依赖项和您自己的代码中对#define round进行文件范围搜索。
根据定义的内容，您可能有几个选项来解决问题：
round。#undef之前包括boost #include预编译标头中的标头和#undef轮